Spatially varying steady state longitudinal magnetization in distant dipolar field-based sequences

C. A. Corum, Arthur F Gmitro

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Sequences based on the distant dipolar field (DDF) have shown great promise for novel spectroscopy and imaging. Unless spatial variation in the longitudinal magnetization, Mz(s), is eliminated by relaxation, diffusion, or spoiling techniques by the end of a single repetition, unexpected results can be obtained due to spatial harmonics in the steady state M zss(s) profile. This is true even in a homogeneous single-component sample. We have developed an analytical expression for the Mzss(s) profile that occurs in DDF sequences when smearing by diffusion is negligible in the TR period. The expression has been verified by directly imaging the Mzss(s) profile after establishing the steady state.

Original languageEnglish (US)
Pages (from-to)131-134
Number of pages4
JournalJournal of Magnetic Resonance
Volume171
Issue number1
DOIs
Publication statusPublished - Nov 2004

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Keywords

  • DDF
  • Distant dipolar field
  • IMQC
  • Intermolecular multiple quantum coherence
  • Steady state longitudinal magnetization

ASJC Scopus subject areas

  • Molecular Biology
  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Radiology Nuclear Medicine and imaging
  • Condensed Matter Physics

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